A tread board for supporting a tread belt of a treadmill includes a plate body that has a bottom surface, and a top surface adapted to be placed beneath an inner surface of the tread belt, and a lubricating surface layer that covers the top surface and that includes a lubricant and a porous matrix body retaining the lubricant. An apparatus for controlling data in a portable terminal includes a plurality of sensors disposed at the sides of the portable terminal to detect data control actions, and a control unit for controlling the data according to the data control actions detected by the plurality of sensors. The case body has an opening for receiving the electronic device and a cavity. With the frame reacting against the bag, the frame can resist a greater downwards vertical load which assists in the filling of the bag. The end product of septage and other biosolids treated using the process disclosed by the current invention can be sold as fertilizer, and utilized without any additional permits.